ImageMagick: Heap Buffer Over-Write in MIFF encoder when using LZMA compression_CVE-2026-46521

{
    "lastseen": "",
    "description": "ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, when using LZMA compression in the MIFF encoder an out of bounds write can occur due to a missing check. This issue has been patched in versions 6.9.13-48 and 7.1.2-23.",
    "published": "2026-06-10T21:40:44.045Z",
    "modified": "2026-06-10T21:40:44.045Z",
    "type": "cve",
    "title": "ImageMagick: Heap Buffer Over-Write in MIFF encoder when using LZMA compression",
    "source": "GitHub_M",
    "references": "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jcqp-6r6f-3mfx",
    "id": "CVE-2026-46521",
    "bulletinFamily": "",
    "cwe": [
        "CWE-131",
        "CWE-252",
        "CWE-787",
        "CWE-835"
    ],
    "cvelist": null,
    "sourceData": "ImageMagick ImageMagick < 6.9.13-48\nImageMagick ImageMagick < 7.1.2-23",
    "sourceHref": "",
    "cvss": {
        "score": 5.5,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "ImageMagick",
    "version": "< 6.9.13-48",
    "vendor": "ImageMagick",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}